Wireless Communication Device and Corresponding Apparatus, Method and Computer Program

1. An apparatus for a wireless communication device, the apparatus comprising: a transceiver module for transmitting and receiving wireless transmissions; and a processing module configured to: control the transceiver module, and communicate with a further wireless communication device via the transceiver module, wherein the communication with the further wireless communication device is based on a transmission of data frames between the wireless communication device and the further wireless communication device, wherein each data frame is based on a two-dimensional grid in a time-frequency plane having a time dimension resolution and a frequency dimension resolution, wherein the two-dimensional time-frequency grid is derived from a two-dimensional grid in a delay-Doppler plane having a delay dimension and a Doppler dimension, wherein the processing module is configured to perform equalization on received data frames, wherein the equalization is performed using a minimum mean square equalizer, the minimum mean square equalizer comprising a term to compensate for self-interference, wherein the processing module is configured to update the term to compensate for the self-interference either periodically or if an error rate of a received data frame exceeds a threshold.

2. The apparatus according to claim 1 , wherein the processing module is configured to determine the term to compensate for self-interference using a previously received data frame.

3. The apparatus according to claim 2 , wherein the processing module is configured to determine the term to compensate self-interference by performing the equalization using a plurality of values for the term to compensate for self-interference, evaluating a quality of a result of the equalization performed using the plurality of values, and selecting a value of the plurality of values for the term to compensate for self-interference based on the evaluation.

4. The apparatus according to claim 1 , wherein each data frame comprises a pilot symbol and a plurality of guard symbols surrounding the pilot symbol, wherein the processing module is configured to determine the term to compensate for self-interference using the pilot symbol and a subset of the plurality of guard symbols of the previously received data frame.

5. The apparatus according to claim 4 , wherein the two-dimensional time-frequency grid is derived from a two-dimensional grid in a delay-Doppler plane having a delay dimension and a Doppler dimension, wherein the processing module is configured to perform an inverse symplectic Fourier transform on the received data frame, wherein the inverse symplectic Fourier transform is performed for the points on the two-dimensional grid in the delay-Doppler plane corresponding to the pilot symbol and to the subset of the plurality of guard symbols, and to determine the term to compensate for self-interference based on a result of the inverse symplectic Fourier transform.

6. The apparatus according to claim 1 , wherein the processing module is configured to transmit information about the term to compensate for self-interference to the further wireless communication device.

7. The apparatus according to claim 1 , wherein the processing module is configured to select a communication mode from a plurality of communication modes for the communication between the wireless communication device and the further wireless communication device, wherein the communication mode defines a combination of a frequency dimension resolution and a time dimension resolution of the two-dimensional grid in the time-frequency plane.

8. The apparatus according to claim 7 , wherein the processing module is configured to select the communication mode from the plurality of communication modes based on an estimated self-interference of the plurality of communication modes.

9. The apparatus according to claim 1 , wherein the data frame is an Orthogonal Time-Frequency Spreading data frame.

10. A wireless communication device comprising the apparatus according to claim 1 .

11. A method for a wireless communication device, the method comprising: communicating with a further wireless communication device via the transceiver module, wherein the communication with the further wireless communication device is based on a transmission of data frames between the wireless communication device and the further wireless communication device, wherein each data frame is based on a two-dimensional grid in a time-frequency plane having a time dimension resolution and a frequency dimension resolution, wherein the two-dimensional time-frequency grid is derived from a two-dimensional grid in a delay-Doppler plane having a delay dimension and a Doppler dimension; and performing equalization on received data frames, wherein the equalization is performed using a minimum mean square equalizer, the minimum mean square equalizer comprising a term to compensate for self-interference, wherein the term to compensate for the self-interference is updated either periodically or if an error rate of a received data frame exceeds a threshold.

12. The method according to claim 11 , wherein the method comprises selecting a communication mode from a plurality of communication modes for the communication between the wireless communication device and the wireless communication device, wherein the communication mode defines a combination of a frequency dimension resolution and a time dimension resolution of the two-dimensional grid in the time-frequency plane.

13. A non-transitory computer-readable medium including a program code for performing a method for a wireless communication device, when the program code is executed on a computer, a processor, or a programmable hardware component, the method comprising: communicating with a further wireless communication device via the transceiver module, wherein the communication with the further wireless communication device is based on a transmission of data frames between the wireless communication device and the further wireless communication device, wherein each data frame is based on a two-dimensional grid in a time-frequency plane having a time dimension resolution and a frequency dimension resolution, wherein the two-dimensional time-frequency grid is derived from a two-dimensional grid in a delay-Doppler plane having a delay dimension and a Doppler dimension; and performing equalization on received data frames, wherein the equalization is performed using a minimum mean square equalizer, the minimum mean square equalizer comprising a term to compensate for self-interference, wherein the term to compensate for the self-interference is updated either periodically or if an error rate of a received data frame exceeds a threshold.